Rolled condenser



P.111CMAS ROLLED CONDENSER Filed Oct. 5, 191? fig fiyz

I WITNESSES: INVENTOR' 231,-, 453% ffi/W/pa 7710/1100 BY mud/L l ATTORNEY meme Oct. 16, 1923.

UNITED STATES PATENT OFFICE.

PHILLIPS THOMAS, OF EDGEWOOD PARK, PENNSYLVANIA, ASSIGNOR DO WESTING- HOUSE ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION OF PENNSYL- VANIA.

Application flle d bctober s, 1917. Serial No. 194,636.

To allwhom it may comem:

Be it known that I, PHILLIPS THOMAS, a citizen of the United States, and a resident of,Edgewood Park, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Rolled Condensers, of which the following is a specification.

My invention relates to improvements in condensers and it has special relation to the lead connections of rolled condensers.

It is customary, in the manufacture of rolled condensers, in which there are several leads for each polarity, to solder the leads of the same polarity together. When this is done, after impregnation of the condens.

or with wax, the process of soldering several leads together requires somuch time and heat, that the condenser-impregnating wax is melted and air is allowed to enter the condenser at the leads. If, however, the

leads are soldered together before the condenser is impregnated, the condenser is held rigidly in shape by the leads and is thus prevented from bein properly impregnated. When the con enser is pressed, the

leads are. moreover, pushed out of shape, if

CAD

not broken.

My invention has for an object to provide a method of so connecting such leads as to secure properelectrical and mechanical connection between the leads connectedto each pole of the condenser, without injury, either t the impregnating wax or to the leads themselves.

In the drawing Fig. 1 is a'plan view of a condenser constructed according to my invention; and Fig. 2 is a side elevation of the structure of Fig. 1.

The condenser I is shown as having terminals 2 and, 3, each consisting of several leads 4. According tomy invention, the leads 4 are inserted during rolling of the condenser, in the ordinary manner, and are allowed to protrude from the condenser.

The condenser is then impregnated and the leads are cleaned and worked over to one side of the condenser, as shown in Fig. 1. The leads are then spot-welded together, as indicated at 5, and, subsequently, are preferably cut ofi'just above the weld, after which any desired method of attaching lead wires may be employed.

This method of construction insures perfect electrical and mechanical connection of the leads. The spot-weldin is accom plished in a very short time wit out injury to the impregnating wax and leaves the condenser properly sealed against air and moisture.

Where a condenser is to be used in locations in which it may be subjected to high temperatures it is important that every electrical connection be such that it will not be readily afi'ected by heat. The leads connect ed according to my invention fully satisfy this requirement.

Various -modifications f my invention may obviously be efi'ected by one skilled in the art without departing from the spirit of the. invention.

I claim as my invention:

1. A method of constructing condenserswhich comprises building up a condenser structure with a plurality of leads for each pole, impregnating the structure, and finally spot-welding the leads of. each pole.

2. A method of constructing rolled conin I ln testimony whereof, I have hereunto subscribed my name this 18th day of Sept, 

